Lock.



l.` V. RITTMANIC.

LOCK.

APPLICATION FILED JUNE Il. |911.

rPatented. Dee. 11,191?.

mmm@

ATTORN lug.

l JOHN V. RITT 1VIAI\`I'IC,*VOFV BRADLEY, ILLINOIS. f

LocKf' Y To all whom it mag/ canoeing Be it knownthat I, JOHN V. RITTMANIC,

locks, and it consists inthe constructions, combinations, and varrangements herein y olescribed and'claimed. l y

An object of my invention is to provide a keyless lock including a casing with a slid-l able bolt which is held in its locked position by a spring pressed lug, a concealed plunger in the knob of the lock being provided to prevent the turning of the knob.

Another object of myinvention is to provide a combination lock including a bolt holding lug, and a plunger for preventing the knob from being turned, the lug and plunger being actuated as a combination t0 secure the yfreedom of the bolt.

vAnother object of the invention is to provide a lock of the character described, which includes an ornamented casing having protuberances for disguisingv the button of the bolt lug. l e v Other objects and advantages will appear from the following specification, reference being had to the accompanying'drawings, in which r- Figure-1 is a side elevation of a lock casing constructed in accordance with my invention.

Fig. 2 is a side elevation of the part shown in Fig. 1, the cover of the casing being removed to Show the bolt and the bolt locking Fig. 3 is a vertical section through the device, and

vFig. 4 is a detail crosssection through the knob showing the normally concealed plunger for holding the knob from rotation.

- The lock casing consists essentially of the base l, and the cover 2 which 'is secured on the base 1 by suitable screws 3 as shown in Fig. 1. The cover 2 is ornamented as at 3, the ornamentation includingv a plurality of protuberances 4 which are designed to 'disguise the push button 5 which 1s adapted to serve asl th lever 6. v y l e The base lhasa recess at'7 in which the bolt 8 is slidable, thecover 2 lbeing located on top of the bolt 8 and preventsloose play ofthe boltfink the casing in the'manner 1E@ STATES PATENT caricia;

specification of Letters Patent. `15 atfntef1 Dec, 115 1917.7 u Application'111e@.Tune 11, 1917.' seriainblaosa l, l I

p depressor for a boltv locking i clearly shown in Fig. 3. "Thebolt 8isgofa peculiar shape as shown inFig. 2 wherein'it will be observed there are two projectvable bolt members 9 which are adapted to project beyond the lock casingvand engage a keeper, -The bolt 8 also includesa cross bar'lO at the front and a bridge 11 whichextends parallel to the bolt members 9. Spaces 12v are accordingly left by the formation of the parts of the bolt as shown in Fig. 2, and guide pieces 13 which may be integral with the base 1 of the lock casing extend up through the spaces'12 and serve as additional means for guiding the bolt and keeping it from rattling in the casing.

A recess 14 atone edge of the bridge 11, receives one end ofthe lever 6, namely that end'opposite the rounded plate l5 on which the push button 5k presses. -The lever' 6'is pressed inwardly by a leaf spring 16 when,

protuberances 4 of the ornamentation of e .the lock casing." It isy therefore obvious that only a person acquainted with the combina tion or working of the lock, can select the correctone .of the protuberances 4 to properly press on the button 5 and releasel the j It willr be seen vin Fig. 3 that the push button-5 has anenlarged base 5fL which is beveled at 5b so that the anglewhich the lever 6'mak'esy in being" depressed, may be vreadily followed by the push button.

It will also be observed that thebase 1 is chambered at 6a beneath the vlever 6 to -accommo'datethe 'depending end of the lug when it is depressed by the push button 5. The bolt .8 iS. retracted by turning a knob works in a bore 21 inthe shaft of the knob 17 as shown in Fig. d.

The plunger 20 has a shoulder or collar 22 which is pressed against a shoulder which is formed between the bore 21 and a counter bore 23 by a spring held in place by a screw plug 25 at the bottom of the bore 21. .The spring 2li forces the plunger 2O out of the aperture 19 when the casing 18 of the knob 17 is turned so as to bringthe openingr 19 into registration with the counter bore/23. rlhe knob 17 has bearing in the cover 2 of the lock casing and extends into a recess 27 as shown in Figs. 3 and 4:. A colla-r 28 prevents the knob 17 from being pulled'y out and the .collar Q8 is placed in position on the end of the knob shaftwhen the parts are assembled, in any suitable manner. A crank or wrist pin 29 is mounted eccentrieally` of the knob 17, and engages an opening 30v at the tree end of a pivoted link 31. rlhe link 31 is pivoted at 32 on the bolt 8 as shown in Fig. 2, and upon turning the knob 17 after thel plunger 20 is released. The bolt members 9 may be retracted into the base 1 it being necessary however tolirst depress thelever G inorder that the bolt 8 may be treed at the recess 14'.

The pivoted link 31 also has a hole 33 which is located directly beneaththe plunger 2O when the parts. are in the position shown in Fig. 1l, and communicates with a cavity 34 in the adjacent portion AofY the bolt 8. T he plunger 20 is adapted'to be depressed through the hole 33 into the cavity 34 and held in place bythe casing 18 of the knob 17. The knob 17 is thus prevented from being turned inthe manner which will be clearly understood from the drawing.

T he operation ot the device is as follows: rlhe boltl members 9 are shown projected in Figs. 1 and 2. rlllie casing 18 of the knob 17 has been turned so that the opening 19 is remote from the end of the plunger 20. The plunger 20 having previously been depressed vthrough the opening 19, is held in positionby the'solid portion' of the casing 18. The other end. ofthe plunger :Z0 is accordingly in position in the. hole 33 and cavityv 34, and-since the wrist pin, 29 is also in connection with the link 31, it follows that the knob 17 may not be turned. It is only when a person acquainted with the combination of the lock, turns the-casing 18 on the knob 17 bringingY the opening 19 into registration with the end of the. plunger 20, that the knob 17 is freed Jfor turning. lt should be yunderstood that the casing 18 is fixed on to the end 17 tightly enough to prevent turning of the casing when grasped casually by someone unauthorized to open the lock.

The spring 211 is "When the easing 18 of the knob 17 is turned the required distance, the opening 19 will come into registration with the end of theplunger 20. rlllie plunger 2() will then spring out of lthe opening 19 because of the tension of the spring 24@ behind it. The movement` of the plunger 20 is sufficient to cause the inner end of the plunger 2O to clear the link 21 as shown in Fig. 4t. The knob 17 may now be turned to act upon the bolt 8. rThe projection of the end QOgthrough the opening 19 of the casing 18 prevents 'urther turning of' the casing 18 when the knob is turned to retract thebolt 8.

y The push button 5 isnow depressed` as to rock the lever (3 on its tulcrum and cause the end of the lug to movefout ofthe recess 1e to free the locking ,boltv 8. y ItA will now be understood that by turning the knob 17, the wrist pin 29 will rock the link 21 and move the bolt 8 backwardlyin the recess 7 in the base 'l of the lock casing. 'y

The' purpose of locating Athe plunger 2O which locks the knob 17 from rotation, beneath the casing 18,` is that oi"concealment7 andy the purpose of locatingthe push button `5 in a. place where it would be expected to find one of the ornamental p'rotuberances l, is that oi' disguise. lt theretorefollows that only a person authorized to open the lock will beacquainted-with the details of the combination a'ndl'be able to operate the parts correctly and effect the retraction of the bolt members 9 to open the lock.

Villiile the constructionv and arrangement of the device is that of af generally preferred form, obviously, modifications may be made without departingV from the spiritof the inventionand scope of the claims.

1. A lock ii'icluding a casing', a bolt slidable in the casing, a knob with a concealed plunger engaging the boltr and holding the knob from turning, a lever on the casingengaging the bolt, and ay disguised button for moving the lever. y

2. A lock including' a casing having a bolt slidable therein, a' knob havingv connection with the bolt and adapted to move the Vbolt by turning the knob, and a plunger in the knob adapted fto engage the bolt to prevent the turning of the knob.

3. A lock including a casing lia-ving abolt slidable therein, a knob havingconnection with the bolt and adapted to move thebolt by turningthe k'nob, a plunger in the knob adaptedy to engage th-e bolt tov prevent the turning of the knob, and a casingon the knob for concealing the end of the' plunger and holding the plunger in'engage-ment with the bolt.

l1. A lock including a casing having a bolt slidable therein, a knob'with a crank connection with the bolt for moving the boltwhen the knob is turned, a plunger adapt-ed to engage the bolt and prevent the turning of the knob, and a casing on the knob for holding the plunger in engagement with the bolt.

5. A lock including a casing havingra bolt slidable therein, a knob with a crank connection with the bolt for moving the bolt when the knob is turned, a casing on the knob with an opening, a plungerin the knob held in engagement with the bolt by thecasing to prevent the turning of the knob, and a spring on the plunger for moving the plunger out of engagement with the bolt when the opening in the casing is moved into registration with the end of the plunger.

6. A lock including a casing having a bolt slidable therein, a knob with a crank connection with the bolt for moving the bolt when the knob is turned, a casing on the knob with an opening, a plunger in the knob held in engagement with the bolt by the casing to prevent the turning of the knob, a spring on the plunger for moving the plunger out of engagement with the bolt when the opening in the casing is moved into registration with the end of the plunger, and means for limiting the movement of the plunger when actuated by the spring.

7. A lock including a casing with a cover having a recess, a knob having a shaft passing through the cover into the recess, and means on the end of the shaft of the knob engaging one wall of the recess `lor preventing the knob from pulling out.

8. A lock including a casing having a bolt slidable therein, a link pivoted to the bolt, a knob having a connection with the link whereby the bolt may be moved by the turning of the knob, and a plunger in the knob engaging the link for preventing the turning of the knob.

9. The combination of the bolt having a cavity, a link pivoted -on kthe bolt with a hole adapted to register with the cavity, a knob having a crank connection with the link whereby the bolt may be moved upon turning the knob, and a plunger carried by the knob adapted to pass through the hole into the cavity to lock the parts together.

l0. The combination of the bolt having a cavity, a link pivoted on the bolt with a hole adapted to register with the cavity, a knob having a crank co-nnection with the link whereby the bolt may be moved upon turning the knob, a plunger carried by the knob adapted to pass through the hole into the cavity to lock the parts together, and a casing on the knob for holding the plunger in the hole and cavity.

ll. A lock including a base having a filler with a chamber, a bolt slidable in the base with a. bridge piece moving adjacent to the iiller, the bridge piece having a recess, a lever stationed in the chamber adapted to enter the recess, a cover with 'a spring pressing. the lever into the recess, and a push button `with a beveled edge engaging the lug, the beveled end being adapted to accommodate the change of angle of the lug when the button is depressed.

12. A lock including a base, a bolt reciprocal in said casing, a link pivotally connected to said bolt, a knob carriedby said casing, a wrist pin carried by said knob and engaging said link, whereby when said knob is turned said link may swing or move for shifting said bolt, and means movably mounted off-center upon said knob releasably engaging said link for holding said knob against turning at certain times.

13. A lock including a casing, a bolt reciprocally mounted upon said casing, a link pivot-ally connected to said bolt, a knob rotatably supported upon said casing, a wrist pin carried by said knob and engaging said link, whereby when said knob is turned said link may be moved for shifting Y said bolt, a spring pressed plunger carried off-center of said knob releasably engaging said link, whereby said knob will be held from turning until said plunger is released from engagement with said link.

14. A lock including a casing, a bolt slid` ably mounted upon said casing, a link pivotally mounted upon said bolt, a knob rotatably supported by said casing, an eccentric pin carried by said knob and engaging said link, whereby when said knob is turned said link will be moved for shifting said bolt, a. spring pressed plunger eccentrically mounted upon said knob and releasably engaging said link for holding said knob from turning at times, a rotatory casing f1tting upon said knob, and said casing releasably engaging said plunger for holding the same in a releasable set position.

l5. A lock including a casing, a bolt slidable upon said casing, a link pivotally connected to said bolt, a knob rotatably supported by said casing, a pin carried by said knob and engaging said link, a spring pressed plunger eccentrically mounted on said knob and releasably engaging said link whereby said knob may be held from turning at times, a casing fitting upon said knob, and conforming to the shape thereof, whereby said casing may be rotatably supported and at the same time held against displacement said casing releasably holding said plunger in a set position.

16. A lock including a casing, a bolt slidable upon said casing, a knob rotatably supported by said casing, a link vpivotally connected to said bolt, a pin connected to said knob and engaging said link, said knob having an eccentrically formed bore communieating with a counter bore, a plunger eX- tending through said bore, a collar carried 'upon-said tph'lnge'nezt spring bearing *upon In testimony whereof I affix my signature ysaid 'fcollar, fa screw pug carried n the n presence of two witnesses.

outer end 'offsad loo-lne7 whereby said spring :JOHN vV RITTMANC wllbeheld n el vset position, and Ineens 'carred'npon said-knob for releasably re- Vitnesses:

taining said plunger n-engagement with N. J. CLUTE,

said link. E. C. VANDAGRIFT.

Copies othisvrpatent may beobtaned for ve cents each, by addressing the Commissionercimiento.

Washington, D.- Q. 

